Preparation of porous plate from municipal solid waste incineration fly ash and its application in a biofilm batch reactor

The reutilization of municipal solid waste incineration (MSWI) fly ash is a prominent area of research. This study focused on creating fly ash porous plate filler (FAPPF) by using techniques, such as water extraction, milling, component adjustment, and sintering. The produced FAPPF was then used to...

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Bibliographic Details
Published in:Environmental progress 2024-09, Vol.43 (5), p.n/a
Main Authors: Wang, Jing, Liu, Han, Sun, Chang‐Jung, Fang, Weicheng
Format: Article
Language:English
Subjects:
Ammonia
Batch reactors
Biofilms
Chemical oxygen demand
circular economy
Combustion
Fly ash
fly ash porous plate filler
Heavy metals
Incineration
Leaching
milling
Municipal solid waste
municipal solid waste incineration fly ash
Municipal waste management
Porosity
Porous plates
Powder
Reactors
Scanning electron microscopy
Sequences
Sewage
sewage treatment
Sintering
Sintering (powder metallurgy)
Solid waste management
Solid wastes
Waste disposal
Waste materials
Wastewater treatment
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Summary:The reutilization of municipal solid waste incineration (MSWI) fly ash is a prominent area of research. This study focused on creating fly ash porous plate filler (FAPPF) by using techniques, such as water extraction, milling, component adjustment, and sintering. The produced FAPPF was then used to cultivate a biofilm for wastewater treatment. The key parameters included a two‐stage water extraction process with a 5:1 liquid‐to‐solid ratio; milling for 1, 2, and 4 h; component adjustment using waste glass powder, milled fly ash, palygorskite powder, and peanut shell powder at a 7:1:1:1 mass ratio; and sintering temperatures ranging from 700 to 1000°C. For the biofilm cultivation and treatment, this study employed semisimulated sewage in a sequencing biofilm batch reactor system. The results revealed the FAPPF had no heavy metal leaching, with a porosity of 48.53%–54.68%. Approximately 90% of its composition was derived from waste materials. Furthermore, scanning electron microscopy microanalysis revealed an internally stable liquid‐phase sintering structure. Finally, a mature biofilm developed in 21 days, achieving maximum removal rates of 95.48% for chemical oxygen demand and 78.4% for ammonia nitrogen. This article confirms the sustainable recycling potential of MSWI fly ash.
ISSN:1944-7442
1944-7450
DOI:10.1002/ep.14459